Plow.



A. P. HAWN.

PLOW.

APPLICATION FILED APILIQ, 1912.

LOG-7,1 1 V Patented July 8, 1913.

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ANDREW r. HAWN, or GooniiAivn, INDIANA, Assreivon or ONE-HALF TO JOHNWOLF, or LAPORTE, INDIANA.

PLOW.

Specification of Letters Patent.

Patented July 8, 1913.

Application filed April 19, 1912. Serial No. 691,781.

To all who m, 2'75 may concern Be itknown that I, ANDREW I. IIAWN, acitizen of the United States, and a resident of the city of Goodland,county of Newton, and State of Indiana have invented certain new anduseful Improvements in Plows, of which the following is a specification;

My invention relates to plows and has for its object to provide animproved structure especially adapted for easy attachment and removalofthe share to the mold board.

The invention is illustrated in the accompanying drawings wherein,

Figure 1 is a land side elevation; Fig. 2 is a bottom view; Fig. 3, ahorizontal detailed section along the line 33 of Fig. :2; Fig. 4 is abottom view of the plow share.

Like parts are indicated by the same letter in all of the figures.

A is a standard depending from the plow beam not here shown.

B is a mold board secured to the arm by means of the rod B and theprojection B which is secured to the cleat B and at tached to the moldboard at B and projects :beyond the same at B B is a hook secured to theback of the mold board.

C is the share having the toe C and a land side face C within which isthe toe recess C Secured to the share is the block 0' undercut amrounded at its outer edge as indicated at I D is a lock link having ahook at each end engaging respectively the undercut end C of the block Cand the end of the hook B.

D is a frog secured to the mold board at- D and provided with a point Dto be received into the recess of the plow share point. To this block issecured the land side E which has the forward inclined edge E engagingthe rear inclined edge of the land side C of the plow share. The landside E is secured by the bolts E E to the frog and the frog is secured.by the bolts E E to the arm A.

It will be understood that the particular form, size, proportion andarrangement of these several parts may be greatly varied withoutdeparting from the spirit of my in vention.

The use and operation of my invention are as follows: When the parts areconstructed and arranged substantially as shown they may be assembled asindicated.

To remove the plow share for sharpening or otherwise, it is onlynecessary with a hammer to drive the lock link free from the hook. Itwill be observed that the underlock end of the hook it is placed at anangle to the length of the lock link and that the end of the block 0 iscurved as indicated at C. By driving the end of thelink toward the plowshare, having reference to Fig. 2, the disengagement is easily effected,because the link can swing on. the curved end of the block as a pivot.The plow share when in position is prevented from moving backwardly bythe engagement of its toe recess with the point of the fr g, and by theengagement of its rear edges with the for ward edges of the land sideand the mold board. It is prevented from rising by the engagement of itsrear undercut land side edge with the overhanging forward edge of theland side and it is prevented from dis placement by the engagement ofits rear surface with the frog and the clea-t. In all these engagementsit is securely held by the lock link. The look link is readily driveninto position by bringing its end over the curved end of the block andthen hammering its other end down along the inclined edge of the hook.The parts are preferably so arranged that the engaging surfaces will bebrought snugly and tightly together at the moment when the link has beendriven into position as indicated in Fig. 2.

I claim:

1. The combination with a plow having a mold-board and removable plowshare, of means comprising members projecting outwardly from the shareand the mold-board, and a removable hook member engaging each of saidoutwardly projecting members to hold the share rigidly in position.

2. The combination with a plow having a mold-board and removable plowshare of a lug projecting forwardly from the moldboard and overlying andsupporting the plow share, members having inclined hook surfacesprojecting outwardly from the share and the mold-board, and a removablehook member engaging each of said outwardly projecting members andresting upon the outwardly projecting lug to hold the share rigidly inposition.

3. The combination with a plow having a mold-board and removable plowshare, of means comprising members projecting outwardly from the shareand the mold-board, and a removable hook member engaging each of saidoutwardly projecting members to hold the share rigidly in position, oneof said outwardly projecting members having its inclined surfaceinclined to the aXis of the hook, and one of the hook members on thehook being similarly inclined to slidingly engage the hook member toclamp the share and mold-board together when the hook is forced alongthe inclined part of the projecting member.

4. The combination with a plow having a mold-board and removable plowshare of a lug projecting forwardly from the moldboard and overlying andsupporting the plow share, members having inclined hook surfacesprojecting outwardly from the share and the mold-board, and a removableCopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

hook member engaging each of said outwardly projecting members andresting upon the outwardly projecting lug to hold the share rigidly inposition, one of said outwardly projecting members having its inclinedsurface inclined to the axis of the hook, and one of the hook members onthe hook being similarly inclined to slidingly engage the hook member toclamp the share and mold-board together when the hook is forced alongthe inclined part of the proj ecting member.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

7 ANDREW P. HAWN.

Witnesses: r r

JOSHUA R. H. Porrs, ARTHUR A. OLSON.

Washington, D. C.

